On 13/11/15 18:49, David Vrabel wrote: > If a page is freed without translations being invalidated, and the page is > subsequently allocated to another domain, a guest with a cached > translation will still be able to access the page. > > Currently translations are invalidated before releasing the page ref, but > while still holding the mm locks. To allow translations to be invalidated > without holding the mm locks, we need to keep a reference to the page > for a bit longer in some cases. > > [ This seems difficult to a) verify as correct; and b) difficult to get > correct in the future. A better suggestion would be useful. Perhaps > using something like pg->tlbflush_needed mechanism that already exists > for pages from PV guests? ]
ping? This question is quite important and hasn't been answered yet. David _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
